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Finding the Fourth Proportional to 893.97, 1,333.53 and 879.12

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Solution

The fourth proportional to 893.97, 1,333.53 and 879.12 is: 1,311.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.97 : 1,333.53 = 879.12 : x
  2. Step 2: Convert to fraction form
    893.97/1,333.53 = 879.12/x
  3. Step 3: Cross multiply
    893.97x = 1,333.53 × 879.12
  4. Step 4: Simplify right side
    893.97x = 1,172,332.89
  5. Step 5: Solve for x
    x = 1,172,332.89/893.97
  6. Step 6: Final answer
    x = 1,311.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.